Yes, ON YOUR FEET! will indeed be getting an Original Broadway Cast Recording. It will be produced (appropriately) by Emilio Estefan. No release or recording date yet announced.
I truely hope your information is correct. I was there this weekend and asked the merchandise desk for the OBR. She replied that there were no plans to record it. I was shocked and would have bought 2 copies on the spot. FYI, School of Rock ( which is only in early previews) is already selling the OBR CD, though it is not available in full on iTunes.